Synthesis, characterization and applications of graft copolymer (Chitosan-g-N,N-dimethylacrylamide) |
| |
Authors: | Jasaswini Tripathy Dinesh Kumar Mishra Mithilesh Yadav Kunj Behari |
| |
Affiliation: | aPolymer Science Research Laboratory, Department of Chemistry, University of Allahabad, Allahabad 211002, India |
| |
Abstract: | An unreported graft copolymer of N,N-dimethylacrylamide (DMA) with chitosan has been synthesized under nitrogen atmosphere using peroxymonosulphate/mandelic acid redox pair. The effect of reaction conditions on grafting parameters i.e. grafting ratio, efficiency, conversion, add on and homopolymer has been studied. Experimental results show that maximum grafting has been obtained at 1.0 g dm−3 concentration of chitosan, 30 × 10−2 mol dm−3 concentration of N,N-dimethylacrylamide and 7.0 × 10−3 mol dm−3 concentration of hydrogen ion. It has also been observed that grafting ratio, add on, conversion and efficiency increase upto 3.2 × 10−3 mol dm−3 of mandelic acid, 12.0 × 10−3 mol dm−3 of potassium peroxymonosulphate, 150 min of time and 40 °C of temperature. Grafted polymer has been characterized by FTIR spectroscopy and thermogravimetric analysis. Water swelling capacity of chitosan-g-N,N-dimethylacrylamide has been determined. It has been observed that the graft copolymer is thermally more stable than parent backbone. |
| |
Keywords: | Graft copolymer Potassium peroxymonosulphate Mandelic acid FTIR spectroscopy Thermal analysis |
本文献已被 ScienceDirect 等数据库收录! |
|